Adjustable roller side bearing.



J. R. NHTGHELLV y vADJUST/HELE ROLLER SIDE BEARING.

APPLICATIDN FILED AUG-20.1%?.

' Patented Jan. 1919.

MES .PATENT OFFICE.

conn n. mrrcnnrm, or onroaeo, Immers, assreuon 'ro WrLnrAM n. Minen. or y cnanrfitrltv tonit- MJUSTABLE ItCLl-Ul'llit SlEDE BlEAiiRING.

To all whom t mayY concern Be it lrnoivn that l', Joux R. lt/lirclarnn, a citizen of the United States, residing at Chicago, in the county of Cookand State of illinois, have invented a certain new and useful improvement in Adjustable Roller- Side hearings, of which the following 1s a" full, clear, concise, and exact description, reference being had` to the accompanying to drawings, forming` a part of this` specitication.

'lihis invention relates to improvements 1ny adjustable roiler side bearings..

An. object of the invention is to provide a it sii/le bearing more particularly adapted; for

railway cars and which is` of simple` construction and adapted to tilt transversely of the axis 'of rotation oi the roller. a

Another and more specific object of the to inventionis to provide aside bearing of the type above indicated which` is adjustable`- as f to height. ln the drawing forming a part of this j. specifications', Figure 1 is a vertical, sectional my vier/,taken through portions of a body bolster, truclr bolster land my improved` side f bearing associated.v therewith. Fig.` 2 is a` vertical, sectional view, taken. substantially on the line 2--2 of Fig. 1. And-Fig. 31s, an

.to end elevation of one ofthe journal support#` ing hloclrS .employedv with my side bearing and illustrating` the manner in which the ad justments :tor height are obtained.

ln said drawing,- ldenotes the under wall te 'of a bddy bolster of a railway car andjll the upper wall ot a corresponding truck bolster, As shown in the drawing, my improved side bearing is attached to the truckholster.

. The improved side hearing, as shown, comto prises,broadly, a base casting B;'an antitriction bearing roller C; journa-lsupporting bloclts lD-w-D; a journal 1E and antiifrietion" rolls FMF.. "'liliie base casting i3` is of substantially rec.-

tt tangular formation and comprises 'a lower l vvali 12 riveted or otherwise sultablysecured kto the truck bolster; vertical upstandingend trails 13-13; vertically extending side Walls ltr-1t and suitable bracing flanges lf2- 15.

`tioihrz end walls 13 may be recessed, as indicated at t6, to prevent accumulationtotI dirt or other foreign mattervvithin the bearing.` Each of the side Walls 14T-Mis provided v with a substantially square recess 17 on its inner tace, said recess providing a vlovver Speciloation of Lettera Iiateut.

horizontal shoulderv 18, as most clearly appears in Fig. 2.' Said recesses 17 are designed to accommodate thc square blocks DD, the blocks D--D` having:` the tapered ends of the journal: E secured therein, as clearly illustratexl in l `ig.,2: By referring to Fig. 3, it will;` be 'noted that the journal E is so mounted; with respect tothe blocks D that 'thei'center of the journal is located preferably 1% inches from the bottom` of the lblock With this simple arrangement; I am en-.

Peuteritedi Jan. 7, 191 9;

f' Application tiled August 2t), 191'?. Eterialltc. mte.

abled toprovidea rollersidebearing which is adjustable as to verticalJieight; `to `compensate fon variations` or` wear of" the parts.

The roller., C" is hollow i and ont` its interior the surface iscrovvned` or convexed;asindi cated at 19, in Fig; 2, saidcrownedsurface 19 i engagngiand riding upon.l the circularly -arrangedfseries of rollsiF, theilatter in turn` being carried by` the journal E. 'With the crownedsurface 19 abovedescribed, it is obvious that theirollerC canti'ltf about an axis transversely to the axis ofthe journal E thereby accommodating the` anti? friction rollerto'variationsin the angle between the opposed surfaces of theY body `and truck bolstel's and` insuring i ai true full width, bearing betweethe roller. C and the adjacent bolster.

lnorder toilimit the tiltingmovement of the roller, theside Wal1s20-20 thereof are provided with` centralV openings 21-21 of substantially `funnel shape, the blocks D bein provided'wtliinward truncated conical etensions22 withinthe recesses 21. 1t is obvious that the sidewalls of the roller will engage said` Vrejections. 22 to limit the tiltin of=`tl1ero 1er.

,j n assembling therolleri C, journal E and taler, the` mus r are.` srstpnd within the roller U, after whichthe journal E is extended therethrough and thus the rolls Fare positively prevented from escaping.

With` the arrangement herein shown and described, the `side bearing` is adjustable to accommodate itself `to variations in the angle between the opposed bolstersurfaces and also adjustable for variations in the vertical distance therel'ietwecn.' The side bearing is composed of relatively few parts all of Which-may be cheaply manufactured and readily assembled. i f

I claim: A A

1. Ina device of the character described, the combination with a hollow `anti-friction roller, of a retaining' member, a journal supported by said member, and anti-friction elements disposed around said journal and within the hollow roller, saidv elements and the inner surface of thev roller having engagement permitting tilting of the roller in a direction transverse to its axis of rotation.

2. In a device of the character described,

-the combination with a retaining casting, of

a journal supported by said casting, a hollow roller through which said journal extends, said roller having its interiorperipheral surface crowned, and a series of anti-friction 1ollsinterposed between said crowned surface and the journal.

3. In a device of the character described, the combination with a retaining casting, of journal supporting blocks associated with said casting, a journal mounted in said blocks, a. hollow roller having its interior face crowned, and anti-friction elements between said crowned face and the journal whereby said roller isl adapted to tilt transversely ofits axis of rotation, the journal being oli1 center with respect to said blocks whereby the height of the roller may be adjusted by changing the relation between the blocks and the base casting.

In Witness that I claim the foregoing I have hereunto subscribed my name this 29th day of Julv 1917.

JOHN R. MITCHELL. 

